1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbd36f5b58ae4f4132962f5e74738cb88ff9a156ad3dadcdf657d0ac4db09ea. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c782121-0725-47ba-a53f-bcb7e5f570a6.json and https://artists.proofprofile.net/proofs/artist/0c782121-0725-47ba-a53f-bcb7e5f570a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).